previous ring.
Go To Next Ring - If you created more than one ring on the element, click to go to the next ring. Add New Ring - Click to add a new ring to the shell or head element.
Delete - Deletes all data for the current ring. Common Detail Parameters (on page 52)
Ring Material - Enter the name of the material. The software contains a database with most of the materials in ASME Code, Section II, Part D, Table 1A, 1B, and 3. Matl... allows a material to be selected directly from the Material Database Dialog Box (on page 485). To modify the material properties of the selected element, click to open the Material Properties Dialog Box (on page 534). Doing so only changes the properties of this element for this analysis. It does not modify the database.
Ring Location - Select the location of the ring. Select ID if the ring is on the inside diameter of the cylinder. Select OD if the ring is on the outside diameter of the cylinder. OD is the most common selection.
Ring Type - Select Bar Type for a flat bar stiffener ring. Select Section Type for a more complex structural cross-section.
For Bar Type, click Check "Standard" Bars. The Bar Selection dialog box displays, where you select the flat bar size, and enter values for Axial Thickness and Radial Width. Bar type stiffeners have a simple rectangular cross section and the software calculates the ring properties based on the width and thickness of the ring. Most stiffeners are bar type.
For Section Type, select a standard cross-section in Choose a Section or click Section Calculator to create a custom fabricated section. You need the following properties for the section: Moment of Inertia, Cross Sectional Area, and Distance to Ring Centroid. The software provides these values for standard cross-sections. You must enter the values for a custom section, as defined in the AISC Steel Construction Manual.
Inside Diameter - Enter the inside diameter of the stiffening ring. This value is usually equal to the outside diameter of the vessel shell (when OD is selected for Ring Location), except for the less common case of a stiffening ring on the inside of the vessel (when ID is selected for Ring Location).This value is used both to calculate the weight of the ring and the stiffness of the ring for external pressure purposes. This entry is only available when Bar Type is selected for Ring Type.
Thickness - Enter the axial thickness of the stiffening ring. This value is used to calculate the weight of the ring and the stiffness of the ring for external pressure purposes. This entry is only available when Bar Type is selected for Ring Type.
Outside Diameter - Enter the outside diameter of the stiffening ring. This value is usually greater than the outside diameter of the vessel shell (when OD is selected for Ring Location), except for the less common case of a stiffening ring on the inside of the vessel (when ID is selected for Ring Location).This value is used to calculate both the weight of the ring and the stiffness of the ring for external pressure purposes. This entry is only available when Bar Type is selected for Ring Type.
Structural Database - Select the structural specification database to use for cross-sections. This entry is only available when Section Type is selected for Ring Type.
Moment of Inertia - Displays the moment of inertia of the stiffening ring about its neutral axis from the specification selected for Structural Database, when a standard section is selected for
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PV Elite User's Guide
Choose a Section. If you created a custom section using Section Calculator, enter a value according to the selected specification. The software uses this value to determine the adequacy of the ring for external pressure calculations, and for conical calculations according to Appendix 1 of the ASME Code. This entry is only available when Section Type is selected for Ring Type. Cross Sectional Area - Displays the cross sectional area of the stiffening ring from thespecification selected for Structural Database, when a standard section is selected for Choose a Section. If you created a custom section using Section Calculator, enter a value according to the selected specification. This entry is only available when Section Type is selected for Ring Type.
Distance to Ring Centroid - Displays the distance from the surface of the shell to the ring centroid from the specification selected for Structural Database, when a standard section is selected for Choose a Section. If you created a custom section using Section Calculator, enter a value according to the selected specification. This entry is only available when Section Type is selected for Ring Type.
Section Ring Height - Displays the depth of the cross-section from the specification selected for Structural Database, when a standard section is selected for Choose a Section. If you created a custom section using Section Calculator, enter a value according to the selected specification. This entry is only available when Section Type is selected for Ring Type. Section Name - Displays the section name from the specification selected for Structural Database, when a standard section is selected for Choose a Section. If you created a custom section using Section Calculator, enter a name. This entry is only available when Section Type is selected for Ring Type.
Choose a Section - Select a section type and a section size:
I - Beam W Section Channel WT Section MT Section ST Section (strong axis out) Angle
(weak axis out) Angle
(strong axis out) Double Angle (weak axis out) Double Angle (strong axis out)